Physostigmine
Pronunciation : Phy`so*stig"mine
Part of Speech : n.
Definition : Defn: An alkaloid found in the Calabar bean (the seed of Physostigma venenosum), and extracted as a white, tasteless, substance, amorphous or crystalline; -- formerly called eserine, with which it was regarded as identical.
(Chem.)
Source : Webster's Unabridged Dictionary, 1913